Note (added 7/20): NYT and WaPo today refer to the group as the Kashmiri American Council, not Foundation.
Intuition and a glance at Wikipedia suggest that the Foreign Agents Registration Act is perhaps not one of the more consistently applied and enforced of U.S. laws. At any rate, quite hard on the heels of talks in Washington, which were said to have gone well, between the acting director of the CIA and the director-general of the ISI, Pakistan's intelligence agency, comes news that the FBI has arrested the executive director of the Kashmiri American Foundation on charges of being an unregistered agent of the Pakistan government. Not to get too speculative (what is this, a blog?) but it looks like maybe the CIA and the FBI and the Justice Dept. aren't communicating as well as they might, in view of the timing. Pure speculation on my part. (Some may see this as retaliation for the Pakistanis having detained several people involved in the vaccination campaign in Abbottabad [see previous post on that] or for the earlier arrest of CIA contractor Raymond Davis. Who knows?)